Omniscience, omnipresence, omnipotence... etc.

[JuliaL]

It actually works better if the espoused concept is arbitrary and untrue.  
People love defending lost causes.  Think Cubs fans.
How unique can you claim your sect is if just anybody can come up with the same answers?

I have a theory about this.  I think the goofier the myth, the more easily people can stick to it.  Understanding religion requries a suspension of rational thought.  Which is easier to give up on-- something that makes 90% sense, but you're working out the details?  Or something that makes 10% sense, and you just say "fuck it"?

To me, the former would encourage rational thought, as you try to polish off a near-perfect world view.  The latter is the one that causes you to really turn off that left brain and go instead with imagination and feelings.  Therefore, it will be easier to fully commit to a complete fairy tale than in something that seems plausible.

That makes sense to me.
It could also indicate that our tendencies to not question are co-evolved with the cultures we evolved in.
If someone is more gullible, they could be more easily taken advantage of. But they would also be more likely to buy into a cultural group which could protect them. It's easier to field armies if the members are in step physically and mentally.